AW: How to debug/fix running error when use rtph264pay?

[Thornton, Keith]

Hi,
normally we stream h264 in byte-stream format and we write files using avc format. H264parse converts on the fly between these two formats. I think you will find that default vlc expects avc format so if you stream in byte-stream format and write this to a file without converting it to avc using h264pars, the file will not play
Gruesse

Von: gstreamer-devel <gstreamer-devel-bounces at lists.freedesktop.org> Im Auftrag von Psychesnet Hsieh
Gesendet: Dienstag, 28. Juli 2020 04:52
An: Discussion of the development of and with GStreamer <gstreamer-devel at lists.freedesktop.org>
Betreff: Re: How to debug/fix running error when use rtph264pay?

Hi gotsring,

Thanks for reply.

First, I was porting my code to x86 PC and run with
SERVER: gst-launch-1.0 udpsrc port=5000 !
application/x-rtp,encoding-name=H264,payload=96 ! rtph264depay ! h264parse !
avdec_h264 ! autovideosink
CLIENT: gst-launch-1.0 appsrc name=ringbuf ! 'video/x-h264,
stream-format=byte-stream' ! h264parse !  rtph264pay mtu=1400 !
udpsink host=10.0.0.10 port=5000

Above combination is working. Thanks.

I still have a question.
Once I remove h264parse from client, it would NOT work anymore, why?
In the future, more complicate case, how do I know I should add h264parse or not?
Please advise. Thank you.

gotsring <gotsring at live.com<mailto:gotsring at live.com>> 於 2020年7月28日 週二 上午3:29寫道：
When I was streaming H.264 over UDP, I used the following pipelines. You
might need to specify the caps in the receiver so that the rth264depay knows
what it's decoding. I also had the MTU specified in rtph264pay, not sure
why, but it worked (Gstreamer 1.14, I think? I no longer have the hardware).

Server:
gst-launch-1.0 nvcamerasrc ! omxh264enc ! 'video/x-h264,
stream-format=byte-stream' ! queue ! h264parse !  rtph264pay mtu=1400 !
udpsink host=10.0.0.10 port=5000 sync=false async=false

Client:
gst-launch-1.0 udpsrc port=5000 !
application/x-rtp,encoding-name=H264,payload=96 ! rtph264depay ! h264parse !
avdec_h264 ! autovideosink



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